More than two decades after his tumultuous ouster from Disney, Mr. Ovitz, the Creative Artists Agency co-founder, is telling his story in a new memoir, “Who is Michael Ovitz?”

Few careers in the entertainment business have been as tumultuous as that of former Hollywood super agent Michael Ovitz. After co-founding Creative Artists Agency in 1975, a powerhouse that represented the likes of Robert De Niro, Bill Murray and Paul Newman, Mr. Ovitz built a reputation as one of the most powerful and ruthless men in Hollywood.

He left CAA in 1995 to join Disney, expecting one day to run the company. Instead he was fired 14 months later. Industry executives excoriated him in the press. “He created a lot of...